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review.shift-gmbh.com / SHIFTPHONES / android_system_vold / 759ac5f87ceae053109aaae84e3a8c97cba1e511
commit759ac5f87ceae053109aaae84e3a8c97cba1e511[log] [tgz]
authorNathan Huckleberry <nhuck@google.com>Wed Feb 22 02:28:28 2023 +0000
committerCherrypicker Worker <android-build-cherrypicker-worker@google.com>Tue Feb 28 18:47:56 2023 +0000
tree17eaabd86c2d1bb875e9590bd52de0a9457bac01
parent68734604939070149f9da8f908b2a66364c90eeb [diff]
Clean up potential busy files after key eviction.

There is a race condition between key eviction and killing user
processes.  The race condition is difficult to properly fix without
significantly degrading UI performance.

If the race condition occurs, decrypted filesystem data is left in
various kernel caches.  To mitigate, we try to ensure the caches are
flushed by evicting the keys again in a worker thread.

Test: Checked that the correct log messages appear when evicting a
user's keys
Bug: 140762419

Change-Id: I9e39e5bb0f5190284552bcd252b6213a22a51e91
(cherry picked from commit a21962b207ebab74c333c95abaca103bc938f38d)
Merged-In: I9e39e5bb0f5190284552bcd252b6213a22a51e91
1 file changed
tree: 17eaabd86c2d1bb875e9590bd52de0a9457bac01
  1. bench/
  2. binder/
  3. fs/
  4. model/
  5. tests/
  6. .clang-format ⇨ ../../build/soong/scripts/system-clang-format
  7. Android.bp
  8. AppFuseUtil.cpp
  9. AppFuseUtil.h
  10. Benchmark.cpp
  11. Benchmark.h
  12. BenchmarkGen.h
  13. Checkpoint.cpp
  14. Checkpoint.h
  15. CleanSpec.mk
  16. cryptfs.cpp
  17. cryptfs.h
  18. CryptoType.cpp
  19. CryptoType.h
  20. EncryptInplace.cpp
  21. EncryptInplace.h
  22. FileDeviceUtils.cpp
  23. FileDeviceUtils.h
  24. FsCrypt.cpp
  25. FsCrypt.h
  26. IdleMaint.cpp
  27. IdleMaint.h
  28. KeyBuffer.cpp
  29. KeyBuffer.h
  30. KeyStorage.cpp
  31. KeyStorage.h
  32. Keystore.cpp
  33. Keystore.h
  34. KeyUtil.cpp
  35. KeyUtil.h
  36. Loop.cpp
  37. Loop.h
  38. main.cpp
  39. MetadataCrypt.cpp
  40. MetadataCrypt.h
  41. MoveStorage.cpp
  42. MoveStorage.h
  43. NetlinkHandler.cpp
  44. NetlinkHandler.h
  45. NetlinkManager.cpp
  46. NetlinkManager.h
  47. OWNERS
  48. PREUPLOAD.cfg
  49. Process.cpp
  50. Process.h
  51. secdiscard.cpp
  52. sehandle.h
  53. TEST_MAPPING
  54. Utils.cpp
  55. Utils.h
  56. vdc.cpp
  57. vold.rc
  58. vold_prepare_subdirs.cpp
  59. VoldNativeService.cpp
  60. VoldNativeService.h
  61. VoldNativeServiceValidation.cpp
  62. VoldNativeServiceValidation.h
  63. VoldUtil.cpp
  64. VoldUtil.h
  65. VolumeManager.cpp
  66. VolumeManager.h